Lyman #50 shows a flat base Sierra soft point as their 110-grain bullet. For Reloader 15, they have 45 to 52.7 grains in a Winchester case. GRT shows the max at just under 80% loading density. I suspect the low fill you found for PV is the reason it's not in the books. With light bullets in a large capacity case, you always have to look hard for something that will burn fast enough to keep up with the rapid expansion in the barrel due to a light bullet's speed, and yet still fill the case well without developing too high a peak pressure.